Blog
The articles gathered here deal with the decisions that arise before a fund is chosen, rather than with market news: how ongoing charges compound over twenty years, what a world index really covers against the S&P 500, how a bond fund behaves when rates rise, and what regular investing does and does not gain you. Each article starts from a question a reader actually has, treats it with figures that can be checked, and says what it does not cover. None is written to rank a product and none is paid for by an issuer. Articles are dated, and the date of last review appears at the top: on a subject where tax scales and tariffs change every year, an undated text is worth nothing at all.
Published by Radif Partners · Updated
Analysis, strategies and education for ETF investors.
Best ETF PEA 2026: Complete Comparison
Discover the top ETFs eligible for the French PEA in 2026, performance, fees, and selection criteria compared.
ETF World vs S&P 500: Which to Choose?
A detailed comparison of MSCI World and S&P 500 ETFs, performance, diversification, risk and costs analyzed.
Bond ETFs in 2026: Navigating Interest Rates
How to position your bond ETF portfolio in a changing interest rate environment, strategies, risks and top picks.
DCA: The Passive Investment Strategy Explained
Dollar-cost averaging demystified, how regular investing builds wealth and reduces timing risk.
The Long-Term Impact of ETF Fees on Your Portfolio
Small fee differences compound into massive gaps over time, here's exactly how much fees cost you.
Frequently asked questions
What do these articles cover?
Each article takes one decision a European ETF investor actually faces: which funds a French PEA accepts, whether to invest in one go or monthly, what rising rates do to a bond fund, and what charges cost over twenty years. They work through the arithmetic with real figures rather than generalities, and they name the rule or the document each figure comes from.
How often are the articles updated?
They are revised when the rule they describe changes, which for tax wrappers and contribution limits means at least once a year, and when a figure they quote is superseded. Each page carries the date of its last real change rather than the date it is served, so an article that has not moved does not pretend to be fresh.
Do the articles replace the screener?
No, they answer a different question. The screener tells you which fund is cheapest or largest in a category; an article tells you whether that category belongs in your portfolio at all, and what the trade-off costs. Reading one without the other usually leads to a well-chosen fund tracking the wrong index.
What these articles do not do
They do not recommend funds by name, set no allocation and forecast no return. They are neither investment advice nor personal recommendations in the regulatory sense: those acts require knowing your assets, income, horizon and commitments, which an article cannot do. Their purpose is to make legible the documents already in front of you, the key information document, the prospectus and the annual report, so that the decision stays yours and is taken in full knowledge of what it involves.
How they are kept current
An article is reviewed when one of its figures changes: a tax scale, a regulatory threshold, the fee of a fund it cites, or an annual report that alters a tracking difference. The date shown is that of the review, not of first publication, and both appear on the page. Where a rule has changed since publication, the text says so at the relevant point rather than being rewritten silently: knowing that a rule has changed matters as much as knowing the new one.
Where to start
If you have bought nothing yet, the article on fees is the most useful: it sets the order of magnitude of what a decision costs, and gives a scale against which to judge everything else. If you are torn between two indices, the article comparing a world index with the S&P 500 shows what each covers and what each leaves out. If you already invest regularly, the one on regular investing examines when it helps and when a single lump sum does better.
What is not here
No price forecasts, no buy recommendations on individual funds and no commentary on the day's market moves. Anyone wanting to know what an index did yesterday will find it at any data provider; anyone wanting to know what one point of cost takes over thirty years, or why two funds on the same index diverge, will find it here. The separation is deliberate: daily news ages in hours, the questions treated here stay the same for years, and a text that mixes the two is unusable after three months.